Revenue from Contracts with Customers Revenue from Contracts with Customers (Schedule of Trust Fees) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Trust Fees [Line Items]
Trust fees	$ 232,700	$ 214,430	$ 190,954
Private Client [Member]
Trust Fees [Line Items]
Trust fees	189,481	173,659	153,524
Institutional [Member]
Trust Fees [Line Items]
Trust fees	37,129	34,596	31,756
Other Trust Fees [Member]
Trust Fees [Line Items]
Trust fees	$ 6,090	$ 6,175	$ 5,674